CN202560543U - Adaptive sealing device of high-pressure plunger pump - Google Patents
Adaptive sealing device of high-pressure plunger pump Download PDFInfo
- Publication number
- CN202560543U CN202560543U CN2012202187057U CN201220218705U CN202560543U CN 202560543 U CN202560543 U CN 202560543U CN 2012202187057 U CN2012202187057 U CN 2012202187057U CN 201220218705 U CN201220218705 U CN 201220218705U CN 202560543 U CN202560543 U CN 202560543U
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- CN
- China
- Prior art keywords
- plunger
- sealing steel
- plug core
- sealing
- elastic telescopic
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- Expired - Fee Related
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model provides an adaptive sealing device of a high-pressure plunger pump, aiming to overcome the problem of poor tightness of the plunger of the existing water injection pump. The adaptive sealing device of the high-pressure plunger pump comprises a plunger core (2), wherein a front-end plunger core (1) is arranged at the front end of the plunger core (2). The key points of the technical proposal are as follows: a blind hole is formed on the axis of the plunger core (2) to form a plunger chamber (10); a slotted hole (11) communicated with the plunger chamber (10) is formed on the plunger core (2) close to the center in the radial direction; an elastic telescopic sleeve (8) is sleeved outside the slotted hole (11); a sealing steel ring (6) is sleeved outside the elastic telescopic sleeve (8); a notch is formed on the sealing steel ring (6); a rubber cushion (7) is filled in the notch; and a steel jacket (5) is sleeved outside the sealing steel ring (6). When the elastic telescopic sleeve (8) expands outwards under the action of water pressure, the sealing steel ring (6) outside the elastic telescopic sleeve (8) also expands outwards as being provided with the notch; as a result, the sealing steel ring (6) always keeps close contact with the steel jacket (5) at the outer side of the sealing steel ring; and excellent seal is achieved and moisture content loss is avoided.
Description
Technical field:
The utility model relates to a kind of plunger pump, is specifically related to a kind of high-pressure plunger pump self-adapting seal device.
Background technique:
The water injection pump of widespread usage is the water injection pump of plunger type in the oil field at present, and the plunger of existing this type of water injection pump adopts soft asbestos packing as sealing, and it is easy to rot because of reasons such as water quality.In addition owing to be under the high-pressure medium feed status, the unusual unbalance stress that also can cause Sealing of plunger motion causes the leakage problem of medium.Moreover plunger the phenomenon of pine can occur down in long operation, thereby causes seal leakage, in order to guarantee that sealing just needs often replacing Sealing, influenced the working efficiency of water injection pump greatly like this, influences normally carrying out of oil producing operation.
The model utility content:
The utility model is intended to overcome the deficiency of existing technology, and the high-pressure plunger pump self-adapting seal device of a kind of good airproof performance, long service life is provided.
The high-pressure plunger pump self-adapting seal device of the utility model; Comprise plug core, the front end of plug core is provided with the front end plug core, is for realizing the technological scheme that above-mentioned purpose adopted: have blind hole on the axle center of plug core and form plunger cavity; Plug core radially has the slotted eye that communicates with plunger cavity near the center; Slotted eye is arranged with the elastic telescopic cover outward, and the outside of elastic telescopic cover is with the sealing steel loop, and the sealing steel loop is provided with otch; Be filled with rubber pad in it, the outside of sealing steel loop is arranged with steel bushing.
Preferably, be in the both sides that seal steel loop on the described plug core and be provided with big envelope.
Preferably, the radially joint of described big envelope and front end plug core and plug core is equipped with first O-ring seal.
Preferably, the axial joint of described plug core and big envelope is provided with second O-ring seal.
The high-pressure plunger pump self-adapting seal device of the utility model; When under elastic telescopic is enclosed within the effect of hydraulic pressure, expanding outwardly; Its outside the sealing steel loop expand outwardly because of self having otch, and then the sealing steel loop all the time with its outside steel bushing closely contact, form good sealing; Avoid the loss of moisture, realize zero leakage; During no water pressure, elastic telescopic cover and sealing steel loop restore to the original state gradually, make between the pump barrel of plug core and plunger pump and produce the gap, and its descending resistance goes to zero, thereby has prolonged the working life of plunger pump.Elastic telescopic cover in the utility model is used for transmitting water pressure radially; The sealing steel loop mainly bears axial frictional force; Owing to separating of pressure transmission parts and wearout parts,, prolonged the working life of plunger pump so the sealing steel loop adopts the good rigid material of wear resistance to process.This sealing means is linear sealing in addition; Reduced the friction area of plunger pump with the sealing steel loop, reduced frictional resistance, the sealing steel loop that produces the maximum displacement variable will wear and tear at first; Other each rings then one by one wear and tear; Sealing steel loop until all is worn, and it has compared with prior art improved more than 3-5 times, thereby saves great amount of manpower and financial resources.
Description of drawings:
Fig. 1 is the overall structure schematic representation of the utility model.
Fig. 2 is the sectional view along A-A line among Fig. 1.
Embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
As depicted in figs. 1 and 2, the high-pressure plunger pump self-adapting seal device in the present embodiment comprises plug core 2; The front end of plug core 2 is provided with front end plug core 1, it is characterized in that: have blind hole on the axle center of plug core 2 and form plunger cavity 10, plug core 2 radially has the slotted eye 11 that communicates with plunger cavity 10 near the center; The quantity of said slotted eye 11 is 3; The slotted eye 11 outer elastic telescopic covers 8 that are arranged with, the outside of elastic telescopic cover 8 is with sealing steel loop 6, has 1 otch on the sealing steel loop 6; Be filled with rubber pad 7 in it, the outside of sealing steel loop 6 is arranged with steel bushing 5.The gum cover that elastic telescopic cover 8 in the utility model is made for rubber.When the plunger pump up stroke, can be full of water in the plunger cavity 10, under the slotted eye 11 outer sheathed hydraulic actions of elastic telescopic cover 8 in plunger cavity 10 elastic strain takes place and outside the expansion; And with the sealing steel loop 6 of propagation of pressure to its outside; Sealing steel loop 6 expands outwardly because of the otch on it, and then sealing steel loop 6 is closely contacted with the steel bushing 5 in its outside all the time, forms good sealing; Avoid the loss of moisture, realize zero leakage; When the plunger pump down stroke; Hydraulic pressure in the plunger cavity 10 can not increase; The inside and outside water pressures of plunger cavity 10 are tending towards equality, and elastic telescopic cover 8 restores to the original state with sealing steel loop 6 gradually, make between the pump barrel of plug core 2 and plunger pump and produce the gap; Its descending resistance goes to zero, thereby has prolonged the working life of plunger pump.The both sides that are in sealing steel loop 6 in addition on the plug core in this embodiment 2 are provided with big envelope 9; Big envelope 9 is equipped with first O-ring seal 3 with the radially joint of front end plug core 1 and plug core 2; Plug core 2 is provided with second O-ring seal 4 with the axial joint of big envelope 9, further guarantees the sealing of plunger pump.
Claims (4)
1. high-pressure plunger pump self-adapting seal device; Comprise plug core (2); The front end of plug core (2) is provided with front end plug core (1); It is characterized in that: have blind hole on the axle center of plug core (2) and form plunger cavity (10), plug core (2) radially has the slotted eye (11) that communicates with plunger cavity (10) near the center
The outer elastic telescopic cover (8) that is arranged with of slotted eye (11), the outside of elastic telescopic cover (8) is with sealing steel loop (6), and sealing steel loop (6) is provided with otch, is filled with rubber pad (7) in it, and the outside of sealing steel loop (6) is arranged with steel bushing (5).
2. a kind of high-pressure plunger pump self-adapting seal device as claimed in claim 1 is characterized in that: the both sides that are in sealing steel loop (6) on the plug core (2) are provided with big envelope (9).
3. according to claim 1 or claim 2 a kind of high-pressure plunger pump self-adapting seal device, it is characterized in that: big envelope (9) is equipped with first O-ring seal (3) with the radially joint of front end plug core (1) and plug core (2).
4. according to claim 1 or claim 2 a kind of high-pressure plunger pump self-adapting seal device, it is characterized in that: plug core (2) is provided with second O-ring seal (4) with the axial joint of big envelope (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202187057U CN202560543U (en) | 2012-05-16 | 2012-05-16 | Adaptive sealing device of high-pressure plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202187057U CN202560543U (en) | 2012-05-16 | 2012-05-16 | Adaptive sealing device of high-pressure plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202560543U true CN202560543U (en) | 2012-11-28 |
Family
ID=47210204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202187057U Expired - Fee Related CN202560543U (en) | 2012-05-16 | 2012-05-16 | Adaptive sealing device of high-pressure plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202560543U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939410A (en) * | 2014-03-28 | 2014-07-23 | 东北石油大学 | Hydraulic self-sealing device in hydraulic cylinder |
| CN111365217A (en) * | 2018-12-26 | 2020-07-03 | 中国石油天然气股份有限公司 | Oil-well pump |
-
2012
- 2012-05-16 CN CN2012202187057U patent/CN202560543U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939410A (en) * | 2014-03-28 | 2014-07-23 | 东北石油大学 | Hydraulic self-sealing device in hydraulic cylinder |
| CN111365217A (en) * | 2018-12-26 | 2020-07-03 | 中国石油天然气股份有限公司 | Oil-well pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Daqing Yongsheng Petroleum Equipment Co., Ltd. Assignor: Northeast Petroleum University Contract record no.: 2013230000473 Denomination of utility model: Adaptive sealing device of high-pressure plunger pump Granted publication date: 20121128 License type: Exclusive License Record date: 20130412 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20140516 |